Installation and Energisation of Tube Well under Nagrota Bagwan Constituency

Amount

Transporation of Rig alongwith allied accessories etc. complete including errection and levelling at site, through all kinds of roads, approaches fields etc. in all leads and lifts upto site of work complete in all respects as per the direction and to the entire satisfaction of Engineer-in-Charge.

Earth work in foundation for digging tubewell in all kind of soil including shoring, struting from GL & upto 5 meters disposing off excaved soil in all leads and lifts upto complete in all respects as per the direction and to the entire satisfaction of Engineer-in-Charge.

Site investigation and Drilling of bore as per sepcification laid down in BIS: 2800-1991( Part-I) with up-to-date ammendments, if any with DTH/ODEX method Starting with 500mm dia reduced to 400mm dia ODEX attachment, if any in all kind of soils, boulders, rock, collapsible strata, sturated soils, artesian conditions including the cost of all consumable, stores, water, fuel, lubricants and other accessories etc. complete in all respects as per the directions of Engineer-in-Charge. Drilling and lowering of M.S. casing pipes conforming to BIS: 4270-2001 with up-to-date ammendments, if any, of suitable size as mentioned above, from 5-80 mtrs. Below ground level within all leads and lifts.

M.S casing pipe 650 - 600 mm dia 5 to 30 = 25 x 2 = 50 meters

M.S casing pipe 600 - 550 mm dia 30 to 60 = 30 x 2 = 60 meters

M.S casing pipe 550 - 500 mm dia 60 to 80 = 20 x 2 = 40 meters

Collection / preservation and display of suitable size sample box with top lid and locking arrangement till handing over of the tubewell to the department complete in all respects as per direction of the Engineer-in-Charge.

Supply and lowering of IS marked Electrict resistance Welded M.S. pipe 300 mm dia nominal size housing 8.00 mm thick having out side dia mtrs. 323.90 mm screwed end, socketted, confirming to BIS: 4270-2001 with up- to-date ammendments if any, in a random length of 4 to 7 mtrs. welded without any circumferential joints into bore hole in vertical position including cost of all scaffolding derricks, poles, clamps embeded in foundation etc. including cost of all cutting, threading and welding of pipes etc. within all leads and lifts, complete in all respects as per direction of the Engineer- in-Charge.

Lowering at site Electric Resistance Welded ( ERW) stainless steel Cage type "V" wire wound screens of size 300 mm 8.00 mm thick with slot opening 1.0 mm, as per IS 8110-2000 with upto date ammendments if any and material specification as per AISI (American Iron and Steel Inst) Type Grade SS-304 in suitable lengths as per site conditions, including the cost of SS socket 8mm thickness ( to be supplied by the Departmet) suitable to accommodate screen and ring including jointing screen with blind pipes complete in all respects including cost of all scaffolding, derricks, poles, clamps embeded including cost of all cutting threading and welding of pipes etc. within all leads and lifts complete in all respects as per the directions of the Engineer- in Charge.

Providing and fixing M.S. taper/reducer as per lengths approved by the Engineer-in-Charge. The material of M.S. taper/reducer shall be equivalent to parent pipe material and shall conform to chemical composition as per clause 5.2 and mechanical properties as per clause 6.1 and table 1 of BIS: 4270-2001 with upto date ammendments, if any complete in all respect as per directions of the Engineer-in-Charge.

Supply / Lowering of IS marked Electrict resistance Welded M.S. pipe 200 mm dia nominal size housing 6.4 mm thick having out side dia mtrs. 219.10 mm screwed end, socketted, confirming to BIS: 4270-2001 with up- to-date ammendments if any, in a random length of 4 to 7 mtrs. welded without any circumferential joints into bore hole in vertical position including cost of all scaffolding derricks, poles, clamps embeded in foundation etc. including cost of all cutting, threading and welding of pipes etc. within all leads and lifts, complete in all respects as per direction of the Engineer- in-Charge.

Lowering at site Electric Resistance Welded ( ERW) stainless steel Cage type "V" wire wound screens of size 200 mm 6.30 mm thick with slot opening 1.0 mm, as per IS 8110-2000 with upto date ammendments, if any and material specification as per AISI (American Iron and Steel Inst) Type Grade SS-304 in suitable lengths as per site conditions, including the cost of SS socket 8mm thickness ( to be supplied by the department) suitable to accommodate screen and ring including jointing screen with blind pipes complete in all respects including cost of all scaffolding, derricks, poles, clamps including cost of all cutting threading and welding of pipes etc within all leads and lifts complete in all respects as per the directions of the Engineer- in Charge.

Providing and fixing MS centralized guides at suitable spacing for each tube well as per BIS: 226-1991 with up to date ammendments, if any within all leads and lifts 1x4 Nos. complete in all respects as per the directions of the Engineer-in-Charge

Supplying, lowering and fixing in position IS marked mild steel bail plug of 200mm/300mm diameters with "U" hooks as per BIS: 2800-1991 with upto date ammendments, if any within all leads and lifts complete in all respects as per the directions of the Engineer-in-Charge.

Providing and fixing in position welded iron cap with locking arrangements of approved design to prevent foreign matter from getting into bore hole as required, within all leads and lifts complete in all respects as per the directions of the Engineer-in-Charge.

Supplying and packing of gravel, consisting of hard quartz or other suitable material with an average specific gravity of not less than 2.5 not containing more than 2% by weight of thin flat of elongated pieces, shall be of sub rounded or rounded grains with minimum angular features of size 2 - 3.35 mm & shall be free from impurities such as shafe, shale, mica, felspar, clay, sand, dirt loam, beamattee and organic material as per BIS: 4097-1967 with uptodate ammendments, if any, around intake of tubewell with minimum thickness of shroud arround screen gererally 100mm to the entire depth of the bore as per BIS 2800:(Part-I)1991 with uptodate ammendments, if any within all leads and lifts complete in all respects as per Direction of the Enginner-in-Charge.

Development of tubewell by back washing method with air compressor of minimum 750 CFM capacity, pumping pipe of 200 mm size and air line of minimum 65mm size or with other suitable method, till the well is thoroughly developed as per clause 4.2 of BIS 11189-1985, with uptodate ammendment, if any, complete in all respects as per direction of the Engineer-in-Charge.

Development of tubewell by contiuous over pumping method with VT pump/ submersible pumps of suitable capacity not less than double the discharge established by the compressor method/design discharge, untill the well is sand free as per BIS:11189-1985 up to date ammendments if any, complete respects as per directions of the Engineer-in-Charge. The draw down in all and discharge to be established by running the VT/submersible pump continuosuly for 8 hours in the presence of officer not lest than the rank of Assistant Engineer.

Testing the verticality of the tubewell as per clause 4.3 of BIS: 2800 (Part-II) 1979 with uptodate ammendments, if any using plumb or plunger 6mm smaller in dia within the inside diameter of the well casing. The results of the verticality test shall be recorded on proforma shown in Appendix "A" of BIS 2800 (Part-II) 1979 with uptodate ammendments, if any, as appended with the tender documents handed over complete in all respect as per the directions of the Engineer-in-Charge.

Dismentalling of the Rig and other allied accessories after completion of job within all leads and lifts complete in all respects as per directions of the Enginner-in- Charge.

Construction of barbed wire enclosure of minimum of size 2.5 x 2.5 m to safe gaured the bore of tubewell with angle iron of size 40 X 40 X 6 mm 1.5 meters in height, ambended in concrete block of 30X30X30 cm in all leads and lifts complete in all respect as per direction and to entire satisfaction of Engineer-in-Charge.

Handing over of the tubewell in complete shape as per appendix "B" of of IS 2800 (Part-II)1979 with up to date ammendments if any, as appended with the tender documents, in laminated form in triplicate complete in all respects as per directions of the Enginner-in-Charge.

Kamlesh

H.N.SINGH AND COMPANY